jcrawford wrote:Here's a nice quote from Dean Falk in Lubenow's 1992 edition of Bones of Contention: "The evidence presented shows that KNM-ER 1805 should not be attributed to Homo ... the shape if the endocast from KNM-ER 1805 (basal view) is similar to that of an African pongid... "
KNM-ER 1805, 1813 and OH 62 are all Australopithicine ape fossils unless neo-Darwinists want to make the racial claim that 3 foot chimpanzees were the first species of human beings in Africa.
OK. You are including these three specimens on the non-human side. Is this based solely on height, or are there other considerations?
I would note that all the creationists listed in the initial post agree with this determination.
The same Smithsonian site on human origins you have cited has some information on KNM-ER 1813, indicating that there has been some debate about its classification. The skull is larger than the average for australopithecus, but not that much larger. The age is given as 1.9 million YA. The 1805 fossil is from about 1.74 MYA.
Here is some info on OH 62. Again, there do seem to be a lot of questions. The stature is small, as you say, and the limb proportions are more like austrolopithecus. The cranium seems to be larger.
The Smithsonian gives
two alternate phylogenies, basically differing in whether homo habilis or homo rudolgensis is ancestral to homo ergaster. They also have a page on the
homo habilis debate as they refer to it. The closing paragraph says
Another debate centered around Homo habilis and Homo rudolfensis is whether or not these two species belong in the genus Homo or would be better suited in one of the other hominid genera. Some researchers feel that all species within the genus Homo should have characteristics, such as locomotor patterns, diet and body proportions, that make them more like modern humans than like the australopiths. These researchers feel that the characteristics of H. habilis and H. rudolfensis are more ape-like than modern, a conclusion that would remove them from our genus. This would make Homo a monophyly (all species evolved from a common ancestor), rather than a polyphyly (the species evolved from more than one ancestor) as it is now thought to be. Other researchers think, however, that moving the two species out of the genus Homo does not solve the problem since the specimens do not easily fit into the genus Australopithecus as currently defined.
Note the last sentence.
Here is some information on austrolopithecus afarensis. The palate is different than in modern humans, as are some of the skull features. There are 300 or so specimens from 3 to 4 MYA. It seems to me the fossil palate is differently shaped than that in
OH 7 which is classified as homo habilis.
This site seems to have a lot of good information, although I haven't had time to go through it all yet.
So, for the sake of arguement, we could say that the 3 specimens you refer to are not homo habilis, but australopithecine. However, this conclusion is not without difficulties, as there are some differences, including cranial capacity and wrist morphology.
Australopithecus afarensis, most famously preserved in the the fossil skeleton of "Lucy", discovered by Johanson in the 1970s. Specimens range from 3.2 to 2.9 million years in age. The individuals are 1 to 1.2 meters tall, with a brain size of only 415 cubic centimeters and a generally ape-like face. Primitive characters include long arms, short legs, and curved finger and toe bones that imply the use of hands and feet in grasping branches. B.G. Richmond and D.S. Strait have presented evidence that fossils attributed to Australopithecus anamensis and Australopithecus afarensis retain specialized wrist morphology associated with knuckle-walking (Nature 404 (23 Mar 2000): 382. However, A. afarensis is fully human in some significant ways, including hindlimbs and pelvis fully adapted for a type of bipedal locomotion.
So, going on up the line, if these 3 are not classified as homo, which are and why? In a sense, you have picked the easiest case first, as this is the one where all the creationists agree. We still haven't addressed why some creationists have different opinions on these.